I made a height map loader using the NEHE tutorial and when i load there tutorial the height map is all connected meaning that its 1 WHOLE mountain, but whne i load mine i always get 4 different parts which should be attached, so instead of 1 whole mountain i have 4 different parts to it.

PLease someone help me. Is there any other way to do this? and if i do it the 3d texture way, the tutorial says that there is no glTexImage3d how would i get that because the way they got it doesnt work when i try it.